Python os.walk文件遍历

os.walk(top, topdown=True, onerror=None, followlinks=False)

可以得到一个三元tupple(dirpath, dirnames, filenames),

第一个为起始路径，第二个为起始路径下的文件夹，第三个是起始路径下的文件。

dirpath 是一个string，代表目录的路径，

dirnames 是一个list，包含了dirpath下所有子目录的名字。

filenames 是一个list，包含了非目录文件的名字。

这些名字不包含路径信息，如果需要得到全路径，需要使用os.path.join(dirpath, name).

通过for循环自动完成递归枚举

a

import os

for i in os.walk(‘c:‘+os.sep+‘ant‘):
    print i

输出:

(‘c:\\ant‘, [‘bin‘, ‘docs‘, ‘etc‘, ‘lib‘, ‘Project‘], [‘fetch.xml‘, ‘get-m2.xml‘, ‘INSTALL‘, ‘KEYS‘, ‘LICENSE‘, ‘NOTICE‘, ‘README‘, ‘WHATSNEW‘])
(‘c:\\ant\\bin‘, [], [‘ant‘, ‘ant.bat‘, ‘ant.cmd‘, ‘antenv.cmd‘, ‘antRun‘, ‘antRun.bat‘, ‘antRun.pl‘, ‘complete-ant-cmd.pl‘, ‘envset.cmd‘, ‘lcp.bat‘, ‘runant.pl‘, ‘runant.py‘, ‘runrc.cmd‘])
(‘c:\\ant\\docs‘, [‘ant2‘, ‘antlibs‘, ‘images‘, ‘manual‘, ‘projects‘, ‘slides‘, ‘webtest‘], [‘antnews.html‘, ‘ant_in_anger.html‘, ‘ant_task_guidelines.html‘, ‘appendix_e.pdf‘, ‘breadcrumbs.js‘, ‘bugs.html‘, ‘bylaws.html‘, ‘contributors.html‘, ‘external.html‘, ‘faq.html‘, ‘favicon.ico‘, ‘index.html‘, ‘legal.html‘, ‘LICENSE‘, ‘license.html‘, ‘mail.html‘, ‘mission.html‘, ‘nightlies.html‘, ‘page.css‘, ‘problems.html‘, ‘projects.html‘, ‘resources.html‘, ‘svn.html‘])
(‘c:\\ant\\docs\\ant2‘, [], [‘actionlist.html‘, ‘features.html‘, ‘FunctionalRequirements.html‘, ‘original-specification.html‘, ‘requested-features.html‘, ‘requested-features.txt‘, ‘VFS.txt‘])````````````````````````````

遍历文件夹并删除特定格式文件的示例

#!/usr/bin/python
# -*- coding: utf-8 -*-
import os
def del_files(path):
    for root , dirs, files in os.walk(path):
        for name in files:
            if name.endswith(".tmp"):
                os.remove(os.path.join(root, name))
  print ("Delete File: " + os.path.join(root, name))
# test
if __name__ == "__main__":
    path = ‘/tmp‘
    del_files(path)

通过for循环即可完成目录的递归

#!/usr/bin/python
# -*- coding: gbk -*-

# os.walk()的使用
import os  

# 枚举dirPath目录下的所有文件  

def main():
#begin
    fileDir = "F:" + os.sep + "aaa"     # 查找F:\aaa 目录下
    for root, dirs, files in os.walk(fileDir):
    #begin
        for dir in dirs:
        #begin
            print(os.path.join(root, dir))
        #end
        for file in files:
        #begin
            print(os.path.join(root, file))
        #end
    #end
    os.system("pause")
#end  

if __name__ == ‘__main__‘:
#begin
    main()
#end